Yeah, it's an R-Line rear bumper, unfortunately, VW did not produce rear flaps to suit as I'm in the same position......
I have the same rear bumper and enquired about a set of front and rear flaps when I was in picking up parts from the dealers.
The bumper has the same profile as an R32 and also the Edition 30.
Someone replied to my question regarding if flaps were available, they said they managed to get GTi flaps to fit reasonably well with the help of a hot air gun and gently pressing the plasic of the flap into contact with the profile of the bumper.
I haven't tried it yet but will order them in at the end of the month and give it a try.